Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea.
MAGMA. 2021 Oct;34(5):767-774. doi: 10.1007/s10334-021-00921-4. Epub 2021 Mar 25.
Our goal is to design and validate a simple apparatus for the safety assessments of magnetically induced torques by four active implantable medical devices (AIMDs) in 1.5 T and 3.0 T magnetic resonance imaging (MRI) environments.
A simple apparatus was designed to measure the magnetically induced torque. Before testing the apparatus, its effectiveness was first evaluated with a commercially available weights. The torque values of the four AIMDs, namely implantable cardioverter defibrillator (ICD), pacemaker, bone conduction implant, and cochlear implant, under 1.5 T and 3.0 T MRI environments were measured and compared with established international standard.
The ICD, pacemaker, bone conduction implant, and cochlear implant had average torques of 1.405, 0.255, 9.460, and 5.490 N·cm under 1.5 T MRI and 2.950, 0.668, 14.618, and 11.484 N·cm under 3.0 T MRI, respectively.
The apparatus developed in this study was verified to be feasible for measuring magnetically induced torques, with tests on four types of AIMDs under 1.5 T and 3.0 T MRI environments. Although the designed structure is simple, the apparatus was shown to measure torque values of AIMDs under MRI accurately.
我们旨在设计并验证一种简单的设备，以评估四种有源植入式医疗器械（AIMD）在 1.5T 和 3.0T 磁共振成像（MRI）环境下的磁致扭矩安全性。
设计了一种简单的设备来测量磁致扭矩。在测试设备之前，首先使用市售砝码对其有效性进行评估。测量了四种 AIMD（植入式心脏复律除颤器[ICD]、起搏器、骨导植入物和人工耳蜗）在 1.5T 和 3.0T MRI 环境下的扭矩值，并与既定的国际标准进行比较。
ICD、起搏器、骨导植入物和人工耳蜗在 1.5T MRI 下的平均扭矩分别为 1.405、0.255、9.460 和 5.490 N·cm，在 3.0T MRI 下的平均扭矩分别为 2.950、0.668、14.618 和 11.484 N·cm。
本研究中开发的设备已被验证可用于测量磁致扭矩，对四种类型的 AIMD 在 1.5T 和 3.0T MRI 环境下进行了测试。虽然设计的结构简单，但该设备被证明可以准确测量 MRI 下 AIMD 的扭矩值。
